Merge pull request #60 from Rotzbua/patch-1

[doc] http -> https

Author: PaulStoffregen

README.adoc

@@ -3,7 +3,7 @@
 With the Arduino Ethernet Shield, this library allows an Arduino board to connect to the internet.
 
 For more information about this library please visit us at
-http://www.arduino.cc/en/Reference/Ethernet
+https://www.arduino.cc/en/Reference/Ethernet
 
 == License ==